Fault code P0727 – a step-by-step guide to diagnosing and fixing it

The meaning of error code P0727 – Engine Speed Input Circuit No Signal

P0727: Causes, signs and repairs

Error code P0727 is displayed and the check engine light is on - what does this mean?

DTC P0727 is detected by the OBD/EOBD system when no signal is received from the transmission control unit input speed sensor. This error code affects the automatic transmission and the transmission control unit, whereby specific variants can occur with different manufacturers such as Ford, GM or Chrysler.

What causes can this fault code have?

Defective input speed sensor of the transmission
Damaged or interrupted cable to the sensor
Loose or corroded plug connections
Defective transmission control unit (TCM)
Mechanical problems in the transmission
Dirt or metal chips on the sensor
Defective wiring in the gearbox housing
Faulty power supply to the sensor

Which symptoms occur in parallel with error code P0727?

Shifting problems: The automatic transmission shifts irregularly or gets stuck in a gear
Emergency running program: The transmission switches to safety mode with limited gears
Jerking when changing gear: Noticeable jolts or delays when changing gears
Increased fuel consumption: Inefficient gear changes increase fuel consumption
Starting problems: In some cases, the vehicle cannot start
Overheating: The transmission can overheat due to incorrect shift points

How can I fix the problem with error code P0727?

Repairing trouble code P0727 requires a systematic diagnosis of the transmission components.
Replacement of the defective input speed sensor on the transmission after prior diagnosis and cleaning of the mounting area
Repair or replacement of the damaged wiring between the sensor and transmission control unit, including sealing
Cleaning and securing all plug connections with contact spray and new seals
Programming or replacement of the transmission control unit in the event of electronic defects
Transmission oil change with filter renewal to remove metal shavings and dirt
Inspection and repair of mechanical transmission damage by a specialist workshop

FAQ - Frequently asked questions about DTC P0727

Can I continue driving with error code P0727?

Continuing to drive with code P0727 is only possible to a limited extent, as the transmission is running in the emergency program. It must be repaired as soon as possible to avoid consequential damage.

How much does it cost to repair fault code P0727?

The cost of repairing fault code P0727 is between 150-800 euros, depending on the cause. A sensor replacement costs around 150-300 euros, while gearbox repairs can be significantly more expensive.

How do I recognize a defective input speed sensor with P0727?

Typical signs are irregular shift points, jerking when accelerating and activation of the emergency running program. An OBD diagnosis confirms the defective sensor.

Can error code P0727 be rectified by changing the transmission oil?

A transmission oil change can rectify code P0727 if dirt or metal shavings are impairing the sensor function. However, if the sensors are defective, only replacement will help.

Is error code P0727 the same for all automatic transmissions?

The EOBD code P0727 has the same basic meaning for all manufacturers, but the specific sensors and repair procedures may differ depending on the transmission type.

How long does it take to repair error code P0727?

The repair time for code P0727 is usually 1-3 hours for a sensor replacement. For more complex transmission problems, the repair can take several days.

Vehicles in which error code P0727 occurs most frequently

Error code P0727 is a specific DTC for automatic transmissions and can occur in various vehicle models, but is most common in the following vehicles:

Ford: Focus, Fusion, Escape, F-150, Explorer (2005-2015)
General Motors: Chevrolet Silverado, GMC Sierra, Cadillac CTS, Buick LaCrosse (2007-2016)
Chrysler: Jeep Grand Cherokee, Dodge Ram, Chrysler 300, Jeep Wrangler (2006-2014)
Honda: Accord, Civic, CR-V, Pilot, Odyssey (2003-2012)
Toyota: Camry, Corolla, RAV4, Highlander, Sienna (2004-2013)
Nissan: Altima, Sentra, Pathfinder, Murano, Maxima (2005-2015)
Hyundai: Sonata, Elantra, Santa Fe, Tucson, Genesis (2006-2016)
Volkswagen: Passat, Jetta, Tiguan, Touareg (2008-2017)
If the code P0727 occurs in your vehicle, you should visit a specialist workshop as soon as possible, as transmission problems can quickly lead to costly consequential damage. Early diagnosis and repair often saves considerable costs and prevents complete transmission failure.

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